 /*******************************************************************************
  * Copyright (c) 2005, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.runtime;

 import org.eclipse.core.internal.runtime.*;
 import org.eclipse.osgi.util.NLS;

 /**
  * Runs the given ISafeRunnable in a protected mode: exceptions
  * thrown in the runnable are logged and passed to the runnable's
  * exception handler. Such exceptions are not rethrown by this method.
  * <p>
  * This class can be used without OSGi running.
  * </p>
  * @since org.eclipse.equinox.common 3.2
  */
 public final class SafeRunner {

     /**
      * Runs the given runnable in a protected mode. Exceptions
      * thrown in the runnable are logged and passed to the runnable's
      * exception handler. Such exceptions are not rethrown by this method.
      *
      * @param code the runnable to run
      */
     public static void run(ISafeRunnable code) {
         Assert.isNotNull(code);
         try {
             code.run();
         } catch (Exception e) {
             handleException(code, e);
         } catch (LinkageError e) {
             handleException(code, e);
         }
     }

     private static void handleException(ISafeRunnable code, Throwable e) {
         if (!(e instanceof OperationCanceledException)) {
             // try to obtain the correct plug-in id for the bundle providing the safe runnable
 Activator activator = Activator.getDefault();
             String pluginId = null;
             if (activator != null)
                 pluginId = activator.getBundleId(code);
             if (pluginId == null)
                 pluginId = IRuntimeConstants.PI_COMMON;
             String message = NLS.bind(CommonMessages.meta_pluginProblems, pluginId);
             IStatus status;
             if (e instanceof CoreException) {
                 status = new MultiStatus(pluginId, IRuntimeConstants.PLUGIN_ERROR, message, e);
                 ((MultiStatus) status).merge(((CoreException) e).getStatus());
             } else {
                 status = new Status(IStatus.ERROR, pluginId, IRuntimeConstants.PLUGIN_ERROR, message, e);
             }
             // Make sure user sees the exception: if the log is empty, log the exceptions on stderr
 if (!RuntimeLog.isEmpty())
                 RuntimeLog.log(status);
             else
                 e.printStackTrace();
         }
         code.handleException(e);
     }
 }

